1. What is the effect on radiograph if there are scratches on intensifying screenNo effectDark spot on radiographReticulation in the radiographLight spots on radiographQuestion 1 of 20 2. Highly radiosensitive cells areRetinaBuccal mucosaLiverLungQuestion 2 of 20 3. Radiographically 'se strum' formed in osteomyelitis isMore opaque than healthy boneLess opaque than healthy boneSame opaque as healthy boneNone of the aboveQuestion 3 of 20 4. a patient sustains an injury to mandible. Which is the best projection for evaluation of the condylar neck and ramus areaSubmentovertexlateral cephReverse towneWatersQuestion 4 of 20 5. Long gray scale is achieved byIncreasing tube currentDecreasing tube currentIncreased voltageDecreasing KVpQuestion 5 of 20 6. the speed with which electrons travel from the filament of the cathode to the target of the anode depends upon theangle between the filament and the targetpotential difference between the two electrodesnumber of milliamperes in the tube circuitvoltage in the filament circuitQuestion 6 of 20 7. which of the following is not done as an investigation in osteosarcoma MRI femurbone marrow biopsybone scanx ray chestQuestion 7 of 20 8. Oxygen deficient cells areNo effect of oxygen levelAnticollagenase activityRadioresistantRadiosensitive tissueQuestion 8 of 20 9. which of the following is most valuable in determining x ray beam qualityspectral distribution of photon energieshomogeneity cofficienteffective photon energypeak kilovoltage with added filtrationQuestion 9 of 20 10. What are the components of a developing solution?Clearing agent restrainer, accelerator, acidifierDeveloping agent, accelerator, restrainerClearing agent, antioxidant preservative, acidifier, hardenerDeveloping agent, acidifier, antioxidant preservative, hardenerQuestion 10 of 20 11. Size of x-ray film for bitewing used in a child for molar tooth4123Question 11 of 20 12. The odontogenic neoplasm, which is composed of loose, primitiveappearing connective tissue that resembles dental pulp, microscopically is known as _____.OdontomaAmeloblastic fibromaAmeloblastomaOdontogenic myxomaQuestion 12 of 20 13. Radiographic view for displaced root fragment in maxillary sinus , best view is:Occipitomenton at 30 degreeLateral oblique viewMRIIOPAQuestion 13 of 20 14. Which projection is best for examining zygomatic arch fractures?Submentovertex projectionWaters projectionReverse Towne projectionLateral cephalometric projectionQuestion 14 of 20 15. Most radiosensitive phase of cell cycle isG2SG1S2Question 15 of 20 16. It is acceptable for the operator to hold the film in a patient's mouth____.If the patient is a childIf the patient or parent grants permissionNeverIf the patient has a handicapQuestion 16 of 20 17. in which one of the following condition sialography is contraindicatedacute parotitisductal calculusrecurrent parotitischronic parotitisQuestion 17 of 20 18. Elongation (the most common error) can be caused byAll of the aboveToo little vertical angulationThe occlusal plane is not parallel to the floorThe film is not parallel to the long axisQuestion 18 of 20 19. ALARA principle stands forAs low are resonably achievableAs low as reasonably achievableAs lower are reasonably achievableAs lower as reasonably achievableQuestion 19 of 20 20. Which of the following is not a fibrotic effect of radiationVelopharyngeal incompetenceTrismusXerostomiaDysphagiaQuestion 20 of 20 Loading...